Set default font size

assets/style.css

@@ -1,6 +1,7 @@
 /* Global styles */
 body {
   font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-size: 16px;
   background: #b24592;
   background: linear-gradient(to left, #b24592 , #f15f79);
   color: #222;